NTSB releases preliminary investigation report regarding M/V Dali incident

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The National Transportation Safety Board (NTSB) has released a preliminary report regarding the accident involving the containership Dali, which took down Baltimore’s Francis Scott Key Bridge after experiencing two power losses. The report details the ship’s electrical system and the sequence of blackouts, starting with a mishap during maintenance when a crewmember mistakenly closed an exhaust damper. This led to the first blackout as the engine driving the active generator stalled. Although power was briefly restored, a second blackout occurred due to low fuel pressure in another generator.

The report also indicates that during recovery from these incidents, changes were made to the ship’s electrical configuration, which may have affected its operation post-departure. Subsequent power failures occurred after the ship left the port, eventually leading to the collision with the bridge. The NTSB is continuing its investigation, emphasizing that the findings are preliminary and could be updated. Notably, all drug and alcohol tests for the crew came back negative, and no fuel contamination was found.

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